True or False: Convection is the transfer of thermal energy when objects touch?
False! Convection is the transfer of thermal energy as matter moves
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True or False: Hot soup warming a cold spoon is an example of conduction.
True
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Explain how convection works when you open the door of a warm oven
When you open the oven door, warm air particles inside move upward into the rest of the kitchen. Cool air in the kitchen will enter the oven and be warmed
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Hot air is (more or less) dense than cool air
Hot air is LESS dense than cool air
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seesaw
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gift
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rocket
Go to first place!
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thief
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5
True or False: Conduction is the transfer of heat that occurs when one thing sits next to another?
False! Conduction is the transfer of heat when one thing TOUCHES another
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Give another example of conduction (besides the head and pillow example)
Thermal energy transfers from:
a warm bird to cooler eggs on a nest
a hot mug of coffee on your cool hands
the hot concrete on your cool feet at Mimi's pool
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5
When solids like your head and pillow touch (and transfer thermal energy), how does the energy move by?
Conduction
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Explain a convection current
Air moving in a circle: warming, being pushed up, cooling, sinking, then warming again
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Thermal energy flows from something _____ to something _____.
warm to cool
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lifesaver
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gift
Win 15 points!
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shark
Other team loses 25 points!
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thief
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A ___________ is a substance through which heat is easily transferred (like metal)
Conductor
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Heat is a form of ____________
energy.
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Cool air from the kitchen will enter the oven to be __________
Warmed up
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baam
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shark
Other team loses 25 points!
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fairy
Take points!
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lifesaver
Give 10 points!
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___________ the transfer of heat that occurs when one thing touches another
